Subwoofer configuration

Two questions:

Just purchased Project Debut Carbon DC and Caimbridge Audio Azure phono stage which runs through 7.1 channel Marantz. Have opportunity to buy McIntosh MC122. I know some might find this sacrilegious but want to keep the subwoofer w the tower speakers. Is this configuration feasible w the MC122? I assume, if so, additional hardware necessary. 

Separately, is it possible to configure setup with Marantz and McIntosh MC122 together and alternate btwn the two for digital and analog sources respectively?  

Pretty new to all this stuff and appreciate the help.